/Engine/Source/Runtime/PakFile/Public/IPlatformFilePak.h
Lookup theFPakEntryLocationstored in the given DirectoryIndex, return nullptr if not found
static const [FPakEntryLocation](API\Runtime\PakFile\FPakEntryLocation) * FindLocationFromIndex ( const [FString](API\Runtime\Core\Containers\FString) & FullPath, const [FString](API\Runtime\Core\Containers\FString) & MountPoint, const [FDirectoryIndex](API\Runtime\PakFile\FPakFile\FDirectoryIndex) & DirectoryIndex )